/// <inheritdoc />
protected override void StartupCore(MethodCallExpression node)
{
var value = node.Object.GetValueFromExpression();
if (value is null)
{
return;
}
Expression expression = node.Arguments[0];
Workflow(whereIsNotEmpty =>
{
if (whereIsNotEmpty)
{
visitor.Visit(expression);
}
else if (!writer.IsReverseCondition)
{
writer.BooleanTrue();
writer.Equal();
writer.BooleanFalse();
}
}, () => VisitContains(value as IEnumerable, expression));
}
private void btnDraw_Click(object sender, EventArgs e)
{
int x = 50, y = 100;
var graphics = splitContainer1.Panel2.CreateGraphics();
var oprb = gbOperations.Controls.OfType <RadioButton>()
.FirstOrDefault(n => n.Checked);
BaseVisitor visitor = Activator.CreateInstance(oprb.Tag as Type, graphics) as BaseVisitor;
foreach (Type type in listBoxElements.Items)
{
Rectangle rect = new Rectangle(x, y, 100, 100);
var element = Activator.CreateInstance(type, rect);
if (element is RectangleElement)
{
visitor.Visit(element as RectangleElement);
}
else if (element is EllipseElement)
{
visitor.Visit(element as EllipseElement);
}
else if (element is StarElement)
{
visitor.Visit(element as StarElement);
}
x += 150;
}
}
/// <inheritdoc />
protected override Expression VisitMethodCall(MethodCallExpression node)
{
if (node.Method.DeclaringType == Types.Queryable)
{
VisitCore(node);
return(node);
}
return(visitor.Visit(node));
}
public override void Accept(BaseVisitor visitor)
{
visitor.Visit(this);
}